[Ballu Miaa]

You can do it like this for restricting a single car on the whole server.

pawn Код:

new VIPCar1 = CreateVehicle Code over here;//Add this under OnGameModeInIt

public OnPlayerEnterVehicle(playerid, vehicleid, ispassenger)
{
    if(IsPlayerVipType(playerid, 0))
    {
        if(IsPlayerInVehicle(playerid, VIPCar1)) // Checking the car is right or not.
        {
        SendClientMessage(playerid, COLOR_RED, "ERROR: This is a VIP only vehicle!");
        RemovePlayerFromVehicle(playerid);
        }
    }
    return 1;
}